This reminds me of the concept about "killing the buddha." Whatever you find that is worshipped or idolized as absolute truth, you kill off that attachment and let go. So you allow greater truth to reveal itself, only after ceasing to strive.
I think everyone is participating in this growth process, in one form or another. Breaking out of a chrysalis, developing wings, and flying free.
Some differences are whether (a) you see the process as positive the whole time or if there is fear or unforgiveness involved, that you have to discredit or demonize something as "bad or wrong" in order to shift from one stage to another (b) if you see the process as ADDING to the knowledge or experience you already have
When religious preachers use similar methods as salespeople, selling you an idea because they find a problem you fear you cannot solve, and this is the solution; you can see the difference between people who (a) make you fear things as bad or invoking punishment out of unforgiveness, and so applying the solution is "conditional" (b) or accepting people and the past as they are, and adding knowledge or understanding that helps improve and deal with all these things WITHOUT demonizing anything out of fear or negative reaction
If you liberate people speaking truth with love and compassion/wisdom, it doesn't matter what system you use but the spirit in how you apply it.
I find it fascinating that people follow this same process. Where the difference is if people are motivated by fear/unforgiveness of whatever they are preaching against, or motivated by love of truth and inclusion of all things seen as natural.